Cape Town - Scotland head coach Vern Cotter has named uncapped back-row Magnus Bradbury among four personnel changes to his line-up to face Argentina.
Bradbury, 21, is the second starting debutant in as many weeks for the national team this November.
His inclusion on the blindside flank sees John Barclay move to number eight, with Hamish Watson returning to the openside and Ryan Wilson selected on the bench.
Edinburgh lock Grant Gilchrist – who captained Scotland to victory over the Pumas in Cordoba two years ago – and Glasgow Warriors hooker Fraser Brown are promoted from the bench in place of the injured Richie Gray (suspected concussion) and cap centurion Ross Ford – named among the replacements – to complete the changes to the forwards.
They will pack down with returning tight-five forwards Zander Fagerson, last week’s debutant Allan Dell, and try-scoring lock Jonny Gray.
The return of wing Tommy Seymour is the only change to the back division, meaning two-time try-scorer Huw Jones and centre partner Alex Dunbar, half-backs Greig Laidlaw and Finn Russell, and Stuart Hogg and Sean Maitland are reinstated.
Two further personnel changes appear on the bench, with prop Alex Allan and lock Tim Swinson coming in for Gordon Reid and the promoted Gilchrist.
"Every week we want to improve. We did a lot of good things against Australia: we scored three tries to their two, we were aggressive in attack and our defence held strong for the most part," said Cotter.
"While it’s disappointing we didn’t walk off with the win, I’m proud of the courage the players showed and the way they adapted to changes on the paddock due to injuries.
"Saturday’s game is going to be a different challenge for us, both physically and mentally, against a very dangerous Argentina side.
"They have the capacity to vary their game so we have to be prepared for whatever approach they take, though we can expect them to look to dominate the set piece as a starting point, be very explosive around the rucks and look to get their offloading game up and running.
"We will have to be disciplined and make sure we capitalise on every opportunity we create."
15 Stuart Hogg, 14 Sean Maitland, 13 Huw Jones, 12 Alex Dunbar, 11 Tommy Seymour, 10 Finn Russell, 9 Greig Laidlaw (c), 8 John Barclay, 7 Hamish Watson, 6 Magnus Bradbury, 5 Jonny Gray, 4 Grant Gilchrist, 3 Zander Fagerson, 2 Fraser Brown, 1 Allan Dell
Substitutes: 16 Ross Ford, 17 Alex Allan, 18 Moray Low, 19 Tim Swinson, 20 Ryan Wilson, 21 Ali Price, 22 Pete Horne, 23 Tim Visser